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GAGE FOR FLOURING ROLLS, 6w.

No. 537,016. mm ted Apr. 9, 1895.

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J.-S. CAMERON. GAGE FOB. FLOURING ROLLS, 8:0.

No. 537,016. Patented Apr. 9, 1895.

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JOHN S. CAMERON, OF EVANSVILLE, INDIANA, ASSIGNOR OF ONE-HALF TO UNITED STATES PATENT OFFICE...

ADDISON W. IGLEHEART, OF SAME PLACE.

GAGE FOR FLOURlNG-ROLLS, 8w.

- SPECIFICATION forming part of Letters Patent N 0. 537,016, dated April 9, 1895.

Application filed February 9, 1894- Serial No. 499,641- (No model.)

To all whom it may concern:

Be it known that 1, JOHN S. CAMERON, a citizen of the United States, residing at Evansville, in the county of Vanderburg and State of Indiana, have invented certain new and useful Improvements in Gages for Flouring and other Rolls; andI do declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to roller mills, and has for its object the production of a simply constructed device for gaging the respective positions of the rolls thereof to determine the degree of vertical adj ustability requisite for paralleling the same.

Heretofore in the art it has been proposed to employ a leveling plate for making the test, the under side of the plate beingstraight and adapted to be placed on top of a pair of rolls; and in the event of the latter being out of parallel, to rock theplate to determine the degree of adj ustability necessary to level the rolls. The test with the leveling plate however can only be made when the rolls are not in motion, and when the housing has been removed; and aside from this there is always a perceptible difierence in the relative positions of the rolls when at rest as compared with the periods of operation.

My invention is designed to overcome these disadvantages, as my device is susceptible of application to the rolls when in motion and in their normal working position, without any labor other than placing the device in position and adjusting the same, without loss of time of the machine; as the exact relative positions of the rolls may be determined in a very short space of time.

It is always presumed when locating the roller mill that the inside rolls are level, so that it i; only necessary to adjust the outside roll to make it-conform with the inside roll, or in other words the axis of the latter being fixed it is only necessary to adjust the axle of the outside roll in parallelism therewith.

With this end in view my invention may be said to consist generally in two gage rods free at one end, and loosely connected at the other end in such a manner as to permit of independent movement in order that the rods may be permitted to bear firmly at four points on the periphery of the rolls whether the latter are in or out of parallelism.

' My invention also consists in a device for elevating the rods, which is adapted to be connected to a convenient part of the mill, and operates not only to support the rods, but by suitable mechanism to raise the same until the contact is made at four points on the periphery of the rolls as above stated.

My invention also consists in the construe tion, relative arrangement and operation of the several parts of my improved device, all of which will fully and clearly appear from a reading of the following description taken in connection with the accompanying drawings, which form a part of this specification, and in which- 7 Figure 1 shows in sectional view enough of a roller mill with my improved device applied to illustrate my invention. Fig. 2 is a perspective view of .my improved device in the position it assumes whengaging a pair of rolls out of parallelism. Fig. 3 is a plan view of the gage rods. Fig. 4 is a horizontal central section of the same. Fig. 5 is a side view of the elevating device; and Fig. 6 is an end view of the same.

Like letters of reference denote like parts in the several figures of the drawings.

Referring to the drawings by letter, A denotes the roller mill and B B are the rolls, the inner one B, having a fixed position, and the outer roll B having means for adjustment relative thereto which are not here shown.

My improvement is in two parts asbefore stated, one part being the gage and the other the elevator. The gage consists of two rods '0 0 preferably channeled out to reduce the weight, and the upper surfaces of same are ground perfectly true, and are normally parallel with each other. Centrally thereof are depressions cl which are formed for the purpose of clearing the scrapers which are employed in connection with smooth rolls and which extend below the periphery of same.

Each of the rods are bent or offset at e e to permit of a connection with each other, which is preferably made by means of a threaded bolt f, securely fixed to one of the rods and passed through a slot gin the other red, a thumb nut f serving in connection with the pin to complete the connection. The rods are reduced at the end adjacent to the connection to form indicators h h.

In operation the thumb nut is loosened and by means of the elevator presently to be described the gage is raised until the rods contact at four points on the peripheries of the rolls, and in the event of the latter being out of parallelism, the rods are moved out of alignment with each other, the degree being shown by the indicators which in turn determine the degree of adjustability required for leveling the outside roll. As soon as the contact is made with the rolls the thumb nut is tightened, and the record preserved until the next test is made.

The device for elevating the gage consists of a bar i which in practice extends from a point outside of the casing of the mill to a point centrally of the rolls, and this bar has on its inner end a screw threaded standard j, secured in position bya nutj', and which carries a bridge 7t adapted to be raised and lowered by means of a thumb nut Z on the standard, abow spring Z being interposed between the nut l and bridge to permit of a yielding contact of the bridge with the gage, which is made by the ends of the bridge abutting against the under surface of the rods of the gage centrally of their length. To prevent endwise movement of the bridge when in position pins are inserted near each end thereof and which abut against the inner sides of the gage as shown.

The bar '1; is firmly held in position by means of a clamp which secures the same to the easing of the mill. This clamp consists of two jaws m m the outer jaw m being secured to a collar m through the opening of which the bar passes, and m is a thumb nut which when tightened bears against the bar andholds the jaw firmly. Thisjaw is inclined inwardly as shown to conform to the side of the casing, and when secured by the thumb nut consti tutes the fixed jaw.

Extending upward from the collar m is an apertured lug it through which is passed a thumb screw 0, the head 0' abutting against thelug, and this screw is also passed through a threaded opening madein the lug n of the collar m which carries the movable jaw m. The jaw m by means of the thumb screw can be moved inward to clamp the casing or outward to permit of the disconnection of the bar.

1) is a toggle one arm 1) of which extends in practice down on the inside of the roll frame, and the other arm p extends to nearly theinner end of the bar where it is connected to a collar g on the bar having a thumb nut q to maintain its adjusted position on the bar. The arm 1) is pivotally secured to the movable jaw m as shown. In practice the exact position which the elevator is to assume be ing determined by the adjustments of the collar q and the jaw m this collar and jaw are firmly secured. When applying the same to the mill the jaw m is moved by turning the screwo until atirm hold in the casing is made and the gage being placed in position under the rolls the bridge is elevated by turning the nut Zas previously described.

I claim as my invention- 1. A gage for the rolls of roller mills consisting of two gage rods adapted for contact at four points on said rolls, said rods being loosely connected together at one end by a pivot parallel with the plane of the rods whereby the latter are capable of vertical and relative adjustment, and an indicator on said rods.

2. A gage for the rolls of roller mills consisting of two gage rods adapted for contact at four points on said rolls, a lateral screw threaded pin on one rod passed through a vertical slot in the other rod whereby the rods are capable of vertical and relative adj ustment, and a thumb nut for said pin.

A gage for the rolls of roller mills consisting of two gage rods adapted for contact at four points on said rolls, offsets in said rods loosely connected together, and indicators on said ofisets.

4. A gage ,for the rolls of roller mills consisting of two gage rods adapted for contact at four points on the rolls, each of said rods having an offset terminating in an indicator, a threaded pin in one of the offsets passed through a slot in the other offset and a thumb nut for the pin.

5. In combination with two gage rods loosely connected together, of a device for elevating said rods consisting of a bar adapted to be secured to a part of the mill and carrying a bridge for supporting the rods and means for raising the bridge.

6. In combination with two gage rods loosely connected together, of a device for elevating said rods consisting of a bar having a clamp for securing the same in position, a threaded standard carryiuga bridge for supporting the rods, a nut on the standard and a spring between the nut and bridge.

7. As a new article of manufacture, a gage and indicator for the rolls of roller mills consisting of two members having offset portions at one end loosely connected by a pivot parallel to the plane of said members, and having independent gage portions adapted for contact at four points on the rolls when the latter are in motion, and means for permitting the relative adjustment of said members.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN S. CAMERON.

\Vitnesses:

(J. M. ToBIN, WILBUR ERSKINE.

IIO 

